Can a 1981 tailgate fit your 1973 Chevrolet truck? Yes, it can if you switch the hinges and locking units. Did you know that the same bed was used from 1973-1987? Does that mean all parts are interchangeable? No. But with this guide you will know what parts will fit. This guide is packed with hundreds of interchanges for the 1973-1987 C-10 to C-30 Chevrolet and 1500- 3500 GMC trucks. Covering everything from engine parts to sheet metal, this guide is a must have if you own one of the American work horses.